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01-Applied Mathematics & Information Sciences
An International Journal


Volumes > Volume 6 > No. 6-3S


The Application of Fuzzy Logic Control Algorithm to Active Suspensions of Vehicles

PP: 855-862
Chuanyin Tang, Guangyao Zhao, Yimin Zhang, Yan Ma,
In this paper, a fuzzy logic control design is presented for the control of an active suspension system. As a non-linear full vehicle model with seven degrees of freedom is adopted, the road roughness intensity is modeled as a filtered white noise stochastic process. Two cases of fuzzy logic control strategies are proposed. In the first case, one fuzzy controller is presented, the dynamic travel of suspension and the derivation of dynamic travel of suspension are designed as the input variables. In the second case, four controllers are designed, namely, the heave movement controller, the pitch movement controller, the roll movement controller and the logical controller. With the aid of software Matlab/Simulink, the simulation models of full vehicle model in two cases of controller are achieved. The time response of the vehicle model due to road disturbance is obtained for each control strategy. Simulation results demonstrate that the proposed active suspension system proves to be effective in the ride comfort and drive stability enhancement of the suspension system.

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